embOS for Renesas M16C6x / M16C20 was developed for and with Renesas' NC30 compiler and supports all memory models offered by this compiler.
It comes with easy to use start projects for Renesas' HEW 4. Software development with PD30 emulator, simulator and KD30 ROM-Monitor is supported.
|Pricing||Trial download||Subscribe to embOS software notification||Release Notes|
Resources and performance data
|Kernel size (ROM)||1338 bytes|
|Kernel RAM usage||25 bytes|
|RAM usage per task control block||19 bytes|
|RAM usage per resource semaphore||4 bytes|
|RAM usage per counting semaphore||2 bytes|
|RAM usage per mailbox||11 bytes|
|RAM usage per software timer||11 bytes|
|RAM usage event||0 bytes|
|Min. stack-size per task (RAM)||40 bytes|
|Context switch time||523 clock cycles (32.6 µs), independent of number of tasks|
|Interrupt latency time||Max. 51 clock cycles (3.2 µs)|
|Kernel CPU usage/TICK||Less than .4% of total calculation time at 1000 interrupts/second (1ms TICK)|
|Basic time unit (TICK)||Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)|
|Max. no. of tasks||Unlimited (by available RAM only)|
|Max. no. of mailboxes||Unlimited (by available RAM only)|
|Max. no. of semaphores||Unlimited (by available RAM only)|
|Max. no. of software timers||Unlimited (by available RAM only)|
|Max. no. of priorities||255|
|Stack size idle task (RAM)||0 (no memory needed)|
|Task switches from within ISR||Possible|
Absolute timings given above were measured with embOS release build on an M30624 CPU running at 16MHz in NEAR memory model.
Board support packages
embOS comes with lots of ready to go start projects and support packages for various M16C CPUs and starterboards.
|Renesas M16C62||MSC ModSDK-M16C-Base|
|Renesas M16C62P||MSC ModSDK-M16C-Base|
|Renesas M16C65||MSC ModSDK-M16C-Base|